AquaGel from Smart Garden is a water absorbing crystal, which swells up when water is added to many times it's own weight. By retaining the water, the frequency with which you need to water the pot or container it is in is vastly reduced. Just add one scoop (5g) of AquaGel to every 5 Litres of compost, mix thoroughly and water well and you will be saving time, water and money!